Toshiba LF414 manual Piping Connections, ６Ｆ８Ａ０８７０, L=5D, L=10D

６Ｆ８Ａ０８７０

4.3 Piping Connections

(1a) Ideal Upstream Straight Pipe Length Installation Requirements

If various joints are used upstream of the detector outlet, the straight pipe length as shown in Table 4.2 is required.

Table 4.2 Required straight pipe length on the upstream side

L=5D	L=10D
(1) 90°bent	(5) Other valves (not fully opened)

LL

(2) Tee

L

(3) Diffuser

L

(4) Fully opened sluice valve

L

L:Required straight pipe length—straight pipe length plus half length of the detector.

D:Nominal bore size (diameter)

NOTES

The length of a reducer, if connected, can be counted as a part of the straight pipe length.

No straight pipe length is needed on the downstream side. If a butterfly valve is installed downstream of the detector, do not let the valve plate protrude into the pipe of the detector

(1b) Optional “Mount Anywhere” Installation

Mount-Anywhere Technology:

With Toshiba’s unique magnetic field distribution technology, the meter is highly immune to upstream flow disturbances. A minimum of 1D (diameter) length of upstream straight pipe from the flange is required to maintain the performance specification.

NOTE

The test results were obtained and demonstrated at Toshiba’s flow calibration facility, Fuchu Japan.

－ ２９ －